![]() ![]() Suppose all matter and energy is made of tiny, vibrating "strings". In supersymmetry string theory, a boson (or force particle) always has a counterpart fermion (or matter particle), and vice versa. Transcript String theory summarized: Cueball: I just had an awesome idea. In the title text, Randall points out that string theory is so technically difficult that at essentially every level (except, presumably, the very top), this explanation is as good as it gets. String theory either hasn't reached that stage yet or cannot. Theory In any wave motion, wavelength ( ) and frequency (f) of the wave is related by f v (1) where v is the velocity of the propagation of the wave. To study dependence of wavelength on the tension and linear mass density of the string. String theory has not provided any useful new knowledge to engineering science as quantum physics has, and lacks the imagination-stirring philosophical implications that the general population associates with other fields - for example, quantum scientists have proven predictions like tunneling, used by modern electronic devices, and relativity is relevant to modern systems like GPS navigation. String theory is an attempt to describe the whole universe under a single theory of everything by adding extra dimensions of spacetime and thinking of particles as minuscule vibrating. To investigate resonance conditions for a vibrating string. Randall is unimpressed with string theorists (for another instance of this, see the punchline to 397: Unscientific). String theory's predictions, however, are few and extremely difficult to test though its inception was over forty years ago, string theory has yet to be experimentally tested. When a new theory is thought up, the theorists will usually supply some predictions, measurable by experimental physicists. While string theory is not yet complete (and some argue that it will never. It is a theory trying to explain everything belonging to our universe specifically, it aims to unite general relativity and quantum field theories. The general picture on offer is relatively clear: a primordial soup of vibrating strings will give rise to particles that carry gravitational force, and a well-behaved string immersed in this soup will have the experience of moving in a relativistic block universe. In string theory, the fundamental particles of our existence are instead seen as a collection of tiny, vibrating strings. A proton can be thought of as three vibrating strings, one for each quark. String theory is a theory in theoretical physics for explaining how the universe works. String theory, by contrast, says the smallest particles are not like points but like strings. As a guitar string vibrates, it is continually expanding and shrinking, and that cannot happen without some of the energy being lost as heat. Title text: This works on pretty much every level. Even if it was a perfect vacuum, the guitar string will continuously turn a bit of its energy into heat, which it will then radiate away. ![]()
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